Test tool

Abstract

The utility model discloses a test tool which comprises a carrier plate and a pressing plate. The carrier plate comprises a workpiece containing groove and a plurality of limiting columns. The multiple limiting columns are arranged adjacent to the opening of the workpiece containing groove. The pressing plate comprises a plurality of pressing rods. And the carrier plate and the pressing plate are oppositely arranged and can be close to each other so as to be in a mold closing state. The projection of the pressing rod on the carrier plate is at least partially located in the workpiece containing groove. When the workpiece accommodating groove accommodates a to-be-tested workpiece and the carrier plate and the pressing plate are in the mold closing state, the plurality of pressing rods stop the to-be-tested workpiece from being separated from the workpiece accommodating groove. Wherein the workpiece accommodating groove and the plurality of limiting columns are all beneficial to reducing the damage to the workpiece to be detected when the workpiece to be detected is placed, and the configuration of the plurality of pressing rods can also effectively prevent the workpiece to be detected from being separated from the workpiece accommodating groove.

Description

Technical Field

[0001] The utility model relates to a testing tool, in particular to a testing tool which utilizes upper and lower templates to clamp a workpiece to be tested. Background Art

[0002] In a test fixture that generally uses an upper and lower mold plate to clamp the workpiece to be tested, the operator places the workpiece to be tested on the lower mold plate. The lower mold plate is usually provided with a plurality of positioning posts to position the workpiece to be tested. The positioning posts protrude from the lower mold plate and are usually used to position the holes on the inner side of the workpiece to be tested. However, such a configuration makes it difficult for the operator to align the holes with the positioning posts when moving the workpiece to be tested into the test fixture, which often causes the electronic components on the workpiece to be tested to collide with the positioning posts or other structural parts in the test fixture, causing damage to the workpiece to be tested. Utility Model Content

[0003] Therefore, the purpose of the present invention is to provide a testing tool, which can increase the convenience of placing the workpiece to be tested and can also reduce the damage to the workpiece to be tested caused by collision, so as to solve the above-mentioned problems.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a test fixture, which includes a carrier plate and a pressure plate. The carrier plate includes a first plate body and a plurality of limiting columns, the first plate body has a workpiece receiving groove and a surface adjacent to the opening of the workpiece receiving groove, and the plurality of limiting columns are arranged on the surface adjacent to the opening of the workpiece receiving groove. The pressure plate includes a second plate body and a plurality of pressing rods, the plurality of pressing rods are arranged on the second plate body, the second plate body and the first plate body are arranged relative to each other in the vertical direction, the second plate body can be moved relative to the first plate body in the vertical direction, and the projection of the pressing rod on the first plate body in the vertical direction is at least partially located in the workpiece receiving groove. Wherein, when the workpiece receiving groove accommodates a workpiece to be tested, and the carrier plate and the pressure plate are close to each other to be in a mold closing state, the plurality of pressing rods prevent the workpiece to be tested from leaving the workpiece receiving groove.

[0005] According to one embodiment of the present invention, a projection portion of the pressing rod on the first plate in the vertical direction is located on the surface.

[0006] According to one embodiment of the present invention, the projection of at least one of the multiple press rods on the first plate in the vertical direction is completely located in the workpiece accommodating groove, and the projection of at least one of the multiple press rods on the first plate in the vertical direction is partially located on the surface.

[0007] According to one embodiment of the present invention, the carrier plate further includes a positioning post, and the positioning post is disposed in the workpiece receiving groove.

[0008] According to one embodiment of the present invention, the workpiece accommodating groove defines a proximal side, a distal side, a left side and a right side, the proximal side is opposite to the distal side, the left side is opposite to the right side, and the multiple limiting columns are distributed on the distal side but not on the proximal side.

[0009] According to one embodiment of the present invention, the plurality of limiting posts are distributed on the left side and the right side.

[0010] According to one embodiment of the present invention, the carrier plate further includes a positioning post, and the positioning post is disposed in the workpiece receiving groove and close to the far side.

[0011] According to one embodiment of the present invention, the workpiece accommodating groove includes an accommodating space portion and two operating space portions, and the two operating space portions are connected to opposite sides of the accommodating space portion.

[0012] According to one embodiment of the present invention, the workpiece to be measured includes a circuit board, and when the workpiece to be measured is accommodated in the workpiece accommodating groove, the circuit board is lower than the surface.

[0013] According to one embodiment of the present invention, when the carrier plate and the pressure plate are close to each other to the mold closing state, the plurality of pressure rods are above the surface in the vertical direction.

[0014] To sum up, in the present invention, the carrier plate of the test tool provides the workpiece accommodating groove and the limiting column, so that the operator can easily, quickly and accurately place the workpiece to be tested on the carrier plate, and in this process, the workpiece to be tested can avoid or at least greatly reduce the collision with the structure of the test tool, thereby solving the problems of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of some components of the test tooling according to an embodiment of the utility model.

[0016] Figure 2 for Figure 1 Schematic diagram of the carrier plate and pressure plate of the test fixture in the mold opening state.

[0017] Figure 3 for Figure 1 Exploded view of the center carrier plate and pressure plate.

[0018] Figure 4 for Figure 1 Top view of the mid-carrier board.

[0019] Figure 5 for Figure 1 The cross-section of the middle carrier plate and the pressure plate, the position of the section line is as follows Figure 4Shown by the center line XX.

[0020] Explanation of the reference numerals: 1-test tooling; 12-carrier plate; 122-first plate body; 1222-workpiece receiving groove; 1222a-near side; 1222b-far side; 1222c-left side; 1222d-right side; 1222e-accommodating space portion; 1222f-operating space portion; 1222g-through hole; 1224-surface; 124-limiting column; 126-positioning column; 14-pressing plate; 142-second plate body; 144-pressing rod; 145-projection; 3-workpiece to be tested; 32-circuit board; 4-probe; D1-vertical direction. DETAILED DESCRIPTION

[0021] The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referenced to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and not to limit the present invention. In addition, the term "coupled" or "connected" mentioned in the following embodiments includes any direct and indirect electrical or structural connection means. Therefore, if the present invention describes a first device coupled / connected to a second device, it means that the first device can be directly electrically / structurally connected to the second device, or indirectly electrically / structurally connected to the second device through other devices or connection means.

[0022] See also Figure 1 and Figure 2 ;in, Figure 1 A schematic diagram showing some components of a test fixture 1 according to an embodiment of the present invention. The test fixture 1 includes a carrier plate 12, a pressure plate 14 and other fixture components (not shown). Figure 1 For example, the base includes a moving mechanism, a testing mechanism, a power source, a control box, etc., which are connected to the carrier 12 and the pressing plate 14. The carrier 12 is used to carry the workpiece 3 to be tested (for example, a printed circuit board assembly (PCBA). To simplify the drawing, only the circuit board 32 is shown). The carrier 12 and the pressing plate 14 can be controlled to move away from each other, for example, the pressing plate 14 is moved upward in the vertical direction D1 (indicated by a double-headed arrow in the figure), so that the carrier 12 and the pressing plate 14 are in an open mold state (such as Figure 2 At this time, the operator can move the workpiece 3 to be tested onto the carrier 12; then the carrier 12 and the pressing plate 14 can be controlled to move closer to each other (for example, the pressing plate 14 moves downward in the vertical direction D1), so that the carrier 12 and the pressing plate 14 are in a mold-closing state (as shown in FIG. Figure 1 As shown in FIG. 1 , the structure of the workpiece 3 to be tested is constrained between the carrier plate 12 and the pressure plate 14 , and thus the testing fixture 1 can test the workpiece 3 to be tested.

[0023] See also Figure 3The carrier plate 12 includes a first plate body 122, a plurality of limiting posts 124 (in this embodiment, there are 6 limiting posts 124, Figure 3 , select one of the labels) and a plurality of positioning posts 126 (in this embodiment, there are two positioning posts 126, Figure 3 , select one mark). The first plate body 122 has a workpiece receiving groove 1222 and a surface 1224 adjacent to the opening of the workpiece receiving groove 1222. Logically, the workpiece receiving groove 1222 can be regarded as a structure that sinks on the surface 1224; in this embodiment, the surface 1224 surrounds the workpiece receiving groove 1222. The workpiece receiving groove 1222 is used to accommodate the workpiece 3 to be measured. The depth and bottom profile of the workpiece receiving groove 1222 can be formed according to the actual structure of the workpiece 3 to be measured, for example, when the workpiece 3 to be measured is accommodated in the workpiece receiving groove 1222, the circuit board 32 of the workpiece 3 to be measured will not protrude from the surface 1224 in the vertical direction D1. The plurality of limit posts 124 are arranged on the surface 1224 adjacent to the opening of the workpiece receiving groove 1222. In principle, the projection of the limit column 124 in the vertical direction D1 is roughly tangent to the side wall of the workpiece receiving groove 1222 or the two are quite close. This structural configuration makes it easy for the operator to use the limit column 124 to align the workpiece 3 to be measured with the workpiece receiving groove 1222 (for example, by pressing the edge of the circuit board 32 of the workpiece 3 to be measured against the limit column 124).

[0024] In this embodiment, according to the actual position of the operator when operating the test fixture 1, the workpiece receiving groove 1222 can be defined as a near side 1222a, a far side 1222b, a left side 1222c and a right side 1222d, the near side 1222a is opposite to the far side 1222b, and the left side 1222c is opposite to the right side 1222d; wherein the near side 1222a is closest to the operator, the far side 1222b is farthest from the operator, and the left side 1222c and the right side 1222d are roughly located on the left and right sides of the operator. The plurality of limiting posts 124 are distributed on the far side 1222b, the left side 1222c and the right side 1222d, but not on the near side 1222a. This distribution helps the operator to use the limiting posts 124 for alignment, and can reduce the collision between the workpiece 3 to be tested and the limiting posts 124 when moving in and out (carrier 12) (because the limiting posts 124 are not provided on the near side 1222a). In addition, the multiple positioning columns 126 are arranged in the workpiece receiving groove 1222 and close to the far side 1222b, but the present invention is not limited to this. For example, positioning columns can also be set at other positions in the workpiece receiving groove 1222. For example, multiple fixing holes can be formed in the workpiece receiving groove 1222, and the positioning columns 126 are selectively inserted into the fixing holes (for example, according to the specifications of the workpiece 3 to be measured).

[0025] In addition, in the present embodiment, the workpiece receiving groove 1222 includes a receiving space portion 1222e and two operating space portions 1222f, wherein the two operating space portions 1222f are connected to opposite sides of the receiving space portion 1222e. The receiving space portion 1222e is used to receive the workpiece 3 to be measured, and the operating space portion 1222f is used for the operator to extend both hands into, so that the operator can grasp the workpiece 3 to be measured with both hands and move it into or out of the receiving space portion 1222e, thereby avoiding or effectively reducing the workpiece 3 to be measured from falling due to gravity and hitting the carrier 12.

[0026] See also Figures 1 to 3 The pressing plate 14 includes a second plate 142 and a plurality of pressing rods 144. The second plate 142 is disposed opposite and parallel to the first plate 122 in the vertical direction D1. The second plate 142 can move relative to the first plate 122 in the vertical direction D1. The plurality of pressing rods 144 are disposed on the second plate 142 toward the first plate 122. The plurality of pressing rods 144 are used to press the carrier plate 12 and the pressing plate 14 when they are in the mold-closing state (e.g. Figure 1 The workpiece 3 to be tested is constrained between the carrier plate 12 and the pressure plate 14. Figure 4 , which shows a top view of the carrier 12; wherein the projections 145 (select one mark) of the plurality of pressing bars 144 on the first plate 122 are represented in the figure by chain lines. Figure 4 As shown, in general, the projection 145 of each pressing rod 144 on the first plate 122 is at least partially located in the workpiece receiving groove 1222. In principle, the projections 145 of most of the pressing rods 144 on the periphery of the plurality of pressing rods 144 are simultaneously located in the workpiece receiving groove 1222 and on the surface 1224 of the first plate 122, and the projections 145 of the pressing rods 144 in the middle part are completely located in the workpiece receiving groove 1222. The pressing rods 144 whose projections 145 are simultaneously located in the workpiece receiving groove 1222 and on the surface 1224 of the first plate 122 are blocked by the surface 1224 during mold closing and will not enter the workpiece receiving groove 1222 (or the receiving space portion 1222e), so these pressing rods 144 will not, in principle, crush the workpiece 3 to be measured (circuit board 32) accommodated in the workpiece receiving groove 1222. Therefore, the plurality of pressing rods 144 can effectively prevent the workpiece 3 to be measured from escaping from the workpiece receiving groove 1222.

[0027] See also Figure 5 In this embodiment, when the carrier plate 12 and the pressure plate 14 are in the mold clamping state (such as Figure 1 and Figure 5 As shown in FIG. 1 , the plurality of pressing bars 144 are all above the surface 1224 of the first plate 122 in the vertical direction D1. Figure 5As shown, the circuit board 32 of the workpiece 3 to be tested is completely accommodated in the workpiece accommodating groove 1222. Therefore, in principle, before the test, the pressure rod 144 will not apply force to the workpiece 3 to be tested, or only applies a very small force (for example, the pressure rod 144 just abuts against the circuit board 32), which can prevent the circuit board 32 from being crushed by the pressure rod 144. In this embodiment, the end of the pressure rod 144 (used to stop the end of the circuit board 32) is higher than the circuit board 32, for example, leaving 0.1mm to 0.2mm. When testing, multiple probes 4 (shown in dotted lines) are placed on the surface of the workpiece 3. Figure 5 Middle) from the bottom of the carrier plate 12 upward through the through hole 1222g (at Figure 4 , select one of the marks) to contact the circuit board 32. In principle, the probe 4 will apply force to the circuit board 32 to ensure that the probe 4 and the circuit board 32 are in effective electrical contact so that the test can be successful. The force applied by the probe 4 to the circuit board 32 may cause the circuit board 32 to move slightly upward or arch upward, but the pressure rod 144 will stop the circuit board 32 to prevent it from continuing to move upward, so that the probe 4 and the circuit board 32 can maintain effective electrical contact. In addition, in actual products, the height of the end of the pressure rod 144 in the middle part is not limited to being the same. Its height design can be determined according to the actual structure of the workpiece 3 to be tested, the position of the test contact, etc., so that the force on the circuit board 32 can be controlled even during the power-on test to avoid damage to the circuit board 32. The design details are not repeated separately.

[0028] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A test tool, characterized in that: The test tooling comprises: A carrier plate, the carrier plate comprising a first plate body and a plurality of limiting posts, the first plate body having a workpiece receiving groove and a surface adjacent to an opening of the workpiece receiving groove, the plurality of limiting posts being arranged on the surface adjacent to the opening of the workpiece receiving groove; and A pressing plate, the pressing plate comprising a second plate body and a plurality of pressing rods, the plurality of pressing rods being arranged on the second plate body, the second plate body being arranged opposite to the first plate body in a vertical direction, the second plate body being movable relative to the first plate body in the vertical direction, and the projection of the pressing rod on the first plate body in the vertical direction being at least partially located in the workpiece receiving groove; Wherein, when the workpiece accommodating groove accommodates a workpiece to be measured, and the carrier plate and the pressure plate are close to each other to be in a mold clamping state, the plurality of pressure rods prevent the workpiece to be measured from leaving the workpiece accommodating groove.

2. The test tool as claimed in claim 1, characterized in that: A projection portion of the pressing bar on the first plate in the vertical direction is located on the surface.

3. The test tool as claimed in claim 1, characterized in that: The projection of at least one of the plurality of press rods on the first plate in the vertical direction is completely located in the workpiece accommodating groove, and the projection of at least one of the plurality of press rods on the first plate in the vertical direction is partially located on the surface.

4. The test tool as claimed in claim 1, characterized in that: The carrier plate further includes a positioning column, and the positioning column is disposed in the workpiece accommodating groove.

5. The test tool as claimed in claim 1, characterized in that: The workpiece receiving groove defines a near side, a far side, a left side and a right side, the near side is opposite to the far side, the left side is opposite to the right side, and the plurality of limiting columns are distributed on the far side but not on the near side.

6. The test tool as claimed in claim 5, characterized in that: The plurality of limiting posts are distributed on the left side and the right side.

7. The test tool as claimed in claim 5, characterized in that: The carrier plate further includes a positioning column, which is disposed in the workpiece receiving groove and close to the far side.

8. The test tool as claimed in claim 1, characterized in that: The workpiece accommodating groove includes an accommodating space portion and two operating space portions, and the two operating space portions are connected to opposite sides of the accommodating space portion.

9. The test tool as claimed in claim 1, characterized in that: The workpiece to be measured includes a circuit board. When the workpiece to be measured is accommodated in the workpiece accommodating groove, the circuit board is lower than the surface.

10. The test tool as claimed in claim 1, characterized in that: When the carrier plate and the pressing plate are close to each other to the mold closing state, the plurality of pressing bars are above the surface in the vertical direction.

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